X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCockpit%2Fpanel.cxx;h=d20af07af99fd6913890a2ac943f7d2c50f1b642;hb=470292a4341334820681d6d6e2ecc6039b8d6dd6;hp=8a5bb68b6fd1e986a182b2fc4fa0d12a455b5757;hpb=e7df2d5dc89ee95c05cc0f169d114984359bc238;p=flightgear.git

diff --git a/src/Cockpit/panel.cxx b/src/Cockpit/panel.cxx
index 8a5bb68b6..d20af07af 100644
--- a/src/Cockpit/panel.cxx
+++ b/src/Cockpit/panel.cxx
@@ -32,14 +32,63 @@
 #include <plib/fnt.h>
 
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/fgpath.hxx>
-#include <Main/options.hxx>
-#include <Main/views.hxx>
+#include <simgear/misc/sg_path.hxx>
+
+#include <Main/globals.hxx>
+#include <Main/fg_props.hxx>
+#include <Main/viewmgr.hxx>
 #include <Objects/texload.h>
+#include <Time/light.hxx>
 
 #include "hud.hxx"
 #include "panel.hxx"
 
+#define WIN_X 0
+#define WIN_Y 0
+#define WIN_W 1024
+#define WIN_H 768
+
+#if defined( NONE ) && defined( _MSC_VER )
+#  pragma message( "A sloppy coder has defined NONE as a macro!!!" )
+#  undef NONE
+#elif defined( NONE )
+#  pragma warn A sloppy coder has defined NONE as a macro!!!
+#  undef NONE
+#endif
+
+
+
+////////////////////////////////////////////////////////////////////////
+// Local functions.
+////////////////////////////////////////////////////////////////////////
+
+
+/**
+ * Calculate the aspect adjustment for the panel.
+ */
+static float
+get_aspect_adjust (int xsize, int ysize)
+{
+  float ideal_aspect = float(WIN_W) / float(WIN_H);
+  float real_aspect = float(xsize) / float(ysize);
+  return (real_aspect / ideal_aspect);
+}
+
+
+
+////////////////////////////////////////////////////////////////////////
+// Global functions.
+////////////////////////////////////////////////////////////////////////
+
+bool
+fgPanelVisible ()
+{
+  return ((current_panel != 0) &&
+	  (current_panel->getVisibility()) &&
+	  (globals->get_viewmgr()->get_current() == 0) &&
+	  (globals->get_current_view()->get_view_offset() == 0.0));
+}
+
 
 
 ////////////////////////////////////////////////////////////////////////
@@ -53,15 +102,16 @@ FGTextureManager::createTexture (const string &relativePath)
 {
   ssgTexture * texture = _textureMap[relativePath];
   if (texture == 0) {
-    cerr << "Texture " << relativePath << " does not yet exist" << endl;
-    FGPath tpath(current_options.get_fg_root());
+    SG_LOG( SG_COCKPIT, SG_DEBUG,
+            "Texture " << relativePath << " does not yet exist" );
+    SGPath tpath(globals->get_fg_root());
     tpath.append(relativePath);
     texture = new ssgTexture((char *)tpath.c_str(), false, false);
     _textureMap[relativePath] = texture;
     if (_textureMap[relativePath] == 0) 
-      cerr << "Texture *still* doesn't exist" << endl;
-    cerr << "Created texture " << relativePath
-	 << " handle=" << texture->getHandle() << endl;
+      SG_LOG( SG_COCKPIT, SG_ALERT, "Texture *still* doesn't exist" );
+    SG_LOG( SG_COCKPIT, SG_DEBUG, "Created texture " << relativePath
+            << " handle=" << texture->getHandle() );
   }
 
   return texture;
@@ -112,18 +162,33 @@ FGCroppedTexture::getTexture ()
 ////////////////////////////////////////////////////////////////////////
 
 FGPanel * current_panel = NULL;
+static fntRenderer text_renderer;
 
-FGPanel::FGPanel (int x, int y, int w, int h)
+
+/**
+ * Constructor.
+ */
+FGPanel::FGPanel ()
   : _mouseDown(false),
     _mouseInstrument(0),
-    _x(x), _y(y), _w(w), _h(h)
+    _width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
+    _x_offset(0), _y_offset(0), _view_height(int(WIN_H * 0.4232)),
+    _bound(false),
+    _jitter(0.0),
+    _xsize_node(fgGetNode("/sim/startup/xsize", true)),
+    _ysize_node(fgGetNode("/sim/startup/ysize", true))
 {
-  setVisibility(current_options.get_panel_status());
-  _panel_h = (int)(h * 0.5768 + 1);
+  setVisibility(fgPanelVisible());
 }
 
+
+/**
+ * Destructor.
+ */
 FGPanel::~FGPanel ()
 {
+  if (_bound)
+    unbind();
   for (instrument_list_type::iterator it = _instruments.begin();
        it != _instruments.end();
        it++) {
@@ -132,38 +197,128 @@ FGPanel::~FGPanel ()
   }
 }
 
+
+/**
+ * Add an instrument to the panel.
+ */
 void
 FGPanel::addInstrument (FGPanelInstrument * instrument)
 {
   _instruments.push_back(instrument);
 }
 
+
+/**
+ * Initialize the panel.
+ */
+void
+FGPanel::init ()
+{
+  // NO-OP
+}
+
+
+/**
+ * Bind panel properties.
+ */
 void
-FGPanel::update () const
+FGPanel::bind ()
+{
+  fgTie("/sim/panel/visibility", &_visibility);
+  fgSetArchivable("/sim/panel/visibility");
+  fgTie("/sim/panel/x-offset", &_x_offset);
+  fgSetArchivable("/sim/panel/x-offset");
+  fgTie("/sim/panel/y-offset", &_y_offset);
+  fgSetArchivable("/sim/panel/y-offset");
+  fgTie("/sim/panel/jitter", &_jitter);
+  fgSetArchivable("/sim/panel/jitter");
+  _bound = true;
+}
+
+
+/**
+ * Unbind panel properties.
+ */
+void
+FGPanel::unbind ()
+{
+  fgUntie("/sim/panel/visibility");
+  fgUntie("/sim/panel/x-offset");
+  fgUntie("/sim/panel/y-offset");
+  _bound = false;
+}
+
+
+/**
+ * Update the panel.
+ */
+void
+FGPanel::update ()
 {
 				// Do nothing if the panel isn't visible.
-  if (!_visibility)
-    return;
+    if ( !fgPanelVisible() ) {
+        return;
+    }
 
 				// If the mouse is down, do something
-  if (_mouseDown) {
-    _mouseDelay--;
-    if (_mouseDelay < 0) {
-      _mouseInstrument->doMouseAction(_mouseButton, _mouseX, _mouseY);
-      _mouseDelay = 2;
+    if (_mouseDown) {
+        _mouseDelay--;
+        if (_mouseDelay < 0) {
+            _mouseInstrument->doMouseAction(_mouseButton, _mouseX, _mouseY);
+            _mouseDelay = 2;
+        }
     }
-  }
 
 				// Now, draw the panel
+    float aspect_adjust = get_aspect_adjust(_xsize_node->getIntValue(),
+                                            _ysize_node->getIntValue());
+    if (aspect_adjust <1.0)
+        update(WIN_X, int(WIN_W * aspect_adjust), WIN_Y, WIN_H);
+    else
+        update(WIN_X, WIN_W, WIN_Y, int(WIN_H / aspect_adjust));
+}
+
+
+void
+FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
+{
+				// Calculate accelerations
+				// and jiggle the panel accordingly
+				// The factors and bounds are just
+				// initial guesses; using sqrt smooths
+				// out the spikes.
+  double x_offset = _x_offset;
+  double y_offset = _y_offset;
+
+  if (_jitter != 0.0) {
+    double a_x_pilot = current_aircraft.fdm_state->get_A_X_pilot();
+    double a_y_pilot = current_aircraft.fdm_state->get_A_Y_pilot();
+    double a_z_pilot = current_aircraft.fdm_state->get_A_Z_pilot();
+
+    double a_zx_pilot = a_z_pilot - a_x_pilot;
+    
+    int x_adjust = int(sqrt(fabs(a_y_pilot) * _jitter)) *
+		   (a_y_pilot < 0 ? -1 : 1);
+    int y_adjust = int(sqrt(fabs(a_zx_pilot) * _jitter)) *
+		   (a_zx_pilot < 0 ? -1 : 1);
+
+				// adjustments in screen coordinates
+    x_offset += x_adjust;
+    y_offset += y_adjust;
+  }
+
   glMatrixMode(GL_PROJECTION);
   glPushMatrix();
   glLoadIdentity();
-  gluOrtho2D(_x, _x + _w, _y, _y + _h);
+  gluOrtho2D(winx, winx + winw, winy, winy + winh); /* right side up */
+  // gluOrtho2D(winx + winw, winx, winy + winh, winy); /* up side down */
 
   glMatrixMode(GL_MODELVIEW);
   glPushMatrix();
   glLoadIdentity();
 
+  glTranslated(x_offset, y_offset, 0);
+
 				// Draw the background
   glEnable(GL_TEXTURE_2D);
   glDisable(GL_LIGHTING);
@@ -171,20 +326,20 @@ FGPanel::update () const
   glEnable(GL_ALPHA_TEST);
   glEnable(GL_COLOR_MATERIAL);
   // glColor4f(1.0, 1.0, 1.0, 1.0);
-  if ( cur_light_params.sun_angle * RAD_TO_DEG < 95.0 ) {
+  if ( cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES < 95.0 ) {
       glColor4fv( cur_light_params.scene_diffuse );
   } else {
       glColor4f(0.7, 0.2, 0.2, 1.0);
   }
   glBindTexture(GL_TEXTURE_2D, _bg->getHandle());
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+  // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+  // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
   glBegin(GL_POLYGON);
-  glTexCoord2f(0.0, 0.0); glVertex3f(_x, _y, 0);
-  glTexCoord2f(10.0, 0.0); glVertex3f(_x + _w, _y, 0);
-  glTexCoord2f(10.0, 5.0); glVertex3f(_x + _w, _y + _panel_h, 0);
-  glTexCoord2f(0.0, 5.0); glVertex3f(_x, _y + _panel_h, 0);
+  glTexCoord2f(0.0, 0.0); glVertex3f(WIN_X, WIN_Y, 0);
+  glTexCoord2f(1.0, 0.0); glVertex3f(WIN_X + _width, WIN_Y, 0);
+  glTexCoord2f(1.0, 1.0); glVertex3f(WIN_X + _width, WIN_Y + _height, 0);
+  glTexCoord2f(0.0, 1.0); glVertex3f(WIN_X, WIN_Y + _height, 0);
   glEnd();
 
 				// Draw the instruments.
@@ -194,6 +349,7 @@ FGPanel::update () const
   for ( ; current != end; current++) {
     FGPanelInstrument * instr = *current;
     glLoadIdentity();
+    glTranslated(x_offset, y_offset, 0);
     glTranslated(instr->getXPos(), instr->getYPos(), 0);
     instr->draw();
   }
@@ -206,27 +362,70 @@ FGPanel::update () const
   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 }
 
+
+/**
+ * Set the panel's visibility.
+ */
 void
 FGPanel::setVisibility (bool visibility)
 {
   _visibility = visibility;
 }
 
+
+/**
+ * Return true if the panel is visible.
+ */
 bool
 FGPanel::getVisibility () const
 {
   return _visibility;
 }
 
+
+/**
+ * Set the panel's background texture.
+ */
 void
 FGPanel::setBackground (ssgTexture * texture)
 {
   _bg = texture;
 }
 
+
+/**
+ * Set the panel's x-offset.
+ */
+void
+FGPanel::setXOffset (int offset)
+{
+  if (offset <= 0 && offset >= -_width + WIN_W)
+    _x_offset = offset;
+}
+
+
+/**
+ * Set the panel's y-offset.
+ */
+void
+FGPanel::setYOffset (int offset)
+{
+  if (offset <= 0 && offset >= -_height)
+    _y_offset = offset;
+}
+
+
+/**
+ * Perform a mouse action.
+ */
 bool
 FGPanel::doMouseAction (int button, int updown, int x, int y)
 {
+				// FIXME: this same code appears in update()
+  int xsize = _xsize_node->getIntValue();
+  int ysize = _ysize_node->getIntValue();
+  float aspect_adjust = get_aspect_adjust(xsize, ysize);
+
 				// Note a released button and return
   // cerr << "Doing mouse action\n";
   if (updown == 1) {
@@ -235,9 +434,20 @@ FGPanel::doMouseAction (int button, int updown, int x, int y)
     return true;
   }
 
-  x = (int)(((float)x / current_view.get_winWidth()) * _w);
-  y = (int)(_h - (((float)y / current_view.get_winHeight()) * _h));
+				// Scale for the real window size.
+  if (aspect_adjust < 1.0) {
+    x = int(((float)x / xsize) * WIN_W * aspect_adjust);
+    y = int(WIN_H - ((float(y) / ysize) * WIN_H));
+  } else {
+    x = int(((float)x / xsize) * WIN_W);
+    y = int((WIN_H - ((float(y) / ysize) * WIN_H)) / aspect_adjust);
+  }
+
+				// Adjust for offsets.
+  x -= _x_offset;
+  y -= _y_offset;
 
+				// Search for a matching instrument.
   for (int i = 0; i < (int)_instruments.size(); i++) {
     FGPanelInstrument *inst = _instruments[i];
     int ix = inst->getXPos();
@@ -272,87 +482,29 @@ FGPanelAction::FGPanelAction ()
 FGPanelAction::FGPanelAction (int button, int x, int y, int w, int h)
   : _button(button), _x(x), _y(y), _w(w), _h(h)
 {
+  for (unsigned int i = 0; i < _bindings.size(); i++)
+    delete _bindings[i];
 }
 
 FGPanelAction::~FGPanelAction ()
 {
 }
 
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGAdjustAction.
-////////////////////////////////////////////////////////////////////////
-
-FGAdjustAction::FGAdjustAction (int button, int x, int y, int w, int h,
-				SGValue * value, float increment, 
-				float min, float max, bool wrap)
-  : FGPanelAction(button, x, y, w, h),
-    _value(value), _increment(increment), _min(min), _max(max), _wrap(wrap)
-{
-}
-
-FGAdjustAction::~FGAdjustAction ()
-{
-}
-
 void
-FGAdjustAction::doAction ()
-{
-  float val = _value->getFloatValue();
-  val += _increment;
-  if (val < _min) {
-    val = (_wrap ? _max : _min);
-  } else if (val > _max) {
-    val = (_wrap ? _min : _max);
-  }
-  _value->setDoubleValue(val);
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGSwapAction.
-////////////////////////////////////////////////////////////////////////
-
-FGSwapAction::FGSwapAction (int button, int x, int y, int w, int h,
-			    SGValue * value1, SGValue * value2)
-  : FGPanelAction(button, x, y, w, h), _value1(value1), _value2(value2)
-{
-}
-
-FGSwapAction::~FGSwapAction ()
+FGPanelAction::addBinding (FGBinding * binding)
 {
+  _bindings.push_back(binding);
 }
 
 void
-FGSwapAction::doAction ()
+FGPanelAction::doAction ()
 {
-  float val = _value1->getFloatValue();
-  _value1->setDoubleValue(_value2->getFloatValue());
-  _value2->setDoubleValue(val);
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGToggleAction.
-////////////////////////////////////////////////////////////////////////
-
-FGToggleAction::FGToggleAction (int button, int x, int y, int w, int h,
-				SGValue * value)
-  : FGPanelAction(button, x, y, w, h), _value(value)
-{
-}
-
-FGToggleAction::~FGToggleAction ()
-{
-}
-
-void
-FGToggleAction::doAction ()
-{
-  _value->setBoolValue(!(_value->getBoolValue()));
+  if (test()) {
+    int nBindings = _bindings.size();
+    for (int i = 0; i < nBindings; i++) {
+      _bindings[i]->fire();
+    }
+  }
 }
 
 
@@ -362,20 +514,13 @@ FGToggleAction::doAction ()
 ////////////////////////////////////////////////////////////////////////
 
 FGPanelTransformation::FGPanelTransformation ()
-{
-}
-
-FGPanelTransformation::FGPanelTransformation (Type _type,
-					      const SGValue * _value,
-					      float _min, float _max,
-					      float _factor, float _offset)
-  : type(_type), value(_value), min(_min), max(_max),
-    factor(_factor), offset(_offset)
+  : table(0)
 {
 }
 
 FGPanelTransformation::~FGPanelTransformation ()
 {
+  delete table;
 }
 
 
@@ -455,12 +600,14 @@ FGPanelInstrument::addAction (FGPanelAction * action)
 bool
 FGPanelInstrument::doMouseAction (int button, int x, int y)
 {
-  action_list_type::iterator it = _actions.begin();
-  action_list_type::iterator last = _actions.end();
-  for ( ; it != last; it++) {
-    if ((*it)->inArea(button, x, y)) {
-      (*it)->doAction();
-      return true;
+  if (test()) {
+    action_list_type::iterator it = _actions.begin();
+    action_list_type::iterator last = _actions.end();
+    for ( ; it != last; it++) {
+      if ((*it)->inArea(button, x, y)) {
+	(*it)->doAction();
+	return true;
+      }
     }
   }
   return false;
@@ -488,11 +635,13 @@ FGLayeredInstrument::~FGLayeredInstrument ()
 void
 FGLayeredInstrument::draw ()
 {
-  for (int i = 0; i < (int)_layers.size(); i++) {
-    glPushMatrix();
-    glTranslatef(0.0, 0.0, (i / 100.0) + 0.1);
-    _layers[i]->draw();
-    glPopMatrix();
+  if (test()) {
+    for (int i = 0; i < (int)_layers.size(); i++) {
+      glPushMatrix();
+      glTranslatef(0.0, 0.0, (i / 100.0) + 0.1);
+      _layers[i]->draw();
+      glPopMatrix();
+    }
   }
 }
 
@@ -553,24 +702,30 @@ FGInstrumentLayer::transform () const
   transformation_list::const_iterator last = _transformations.end();
   while (it != last) {
     FGPanelTransformation *t = *it;
-    float val = (t->value == 0 ? 0.0 : t->value->getFloatValue());
-    if (val < t->min) {
-      val = t->min;
-    } else if (val > t->max) {
-      val = t->max;
-    }
-    val = val * t->factor + t->offset;
-
-    switch (t->type) {
-    case FGPanelTransformation::XSHIFT:
-      glTranslatef(val, 0.0, 0.0);
-      break;
-    case FGPanelTransformation::YSHIFT:
-      glTranslatef(0.0, val, 0.0);
-      break;
-    case FGPanelTransformation::ROTATION:
-      glRotatef(-val, 0.0, 0.0, 1.0);
-      break;
+    if (t->test()) {
+      float val = (t->node == 0 ? 0.0 : t->node->getFloatValue());
+      if (val < t->min) {
+	val = t->min;
+      } else if (val > t->max) {
+	val = t->max;
+      }
+      if(t->table==0) {
+	val = val * t->factor + t->offset;
+      } else {
+	val = t->table->interpolate(val) * t->factor + t->offset;
+      }
+      
+      switch (t->type) {
+      case FGPanelTransformation::XSHIFT:
+	glTranslatef(val, 0.0, 0.0);
+	break;
+      case FGPanelTransformation::YSHIFT:
+	glTranslatef(0.0, val, 0.0);
+	break;
+      case FGPanelTransformation::ROTATION:
+	glRotatef(-val, 0.0, 0.0, 1.0);
+	break;
+      }
     }
     it++;
   }
@@ -585,73 +740,80 @@ FGInstrumentLayer::addTransformation (FGPanelTransformation * transformation)
 
 
 ////////////////////////////////////////////////////////////////////////
-// Implementation of FGTexturedLayer.
+// Implementation of FGGroupLayer.
 ////////////////////////////////////////////////////////////////////////
 
-
-FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
-  : FGInstrumentLayer(w, h)
+FGGroupLayer::FGGroupLayer ()
 {
-  setTexture(texture);
 }
 
-
-FGTexturedLayer::~FGTexturedLayer ()
+FGGroupLayer::~FGGroupLayer ()
 {
+  for (unsigned int i = 0; i < _layers.size(); i++)
+    delete _layers[i];
 }
 
-
 void
-FGTexturedLayer::draw ()
+FGGroupLayer::draw ()
 {
-  int w2 = _w / 2;
-  int h2 = _h / 2;
-
-  transform();
-  glBindTexture(GL_TEXTURE_2D, _texture.getTexture()->getHandle());
-  glBegin(GL_POLYGON);
-
-				// From Curt: turn on the panel
-				// lights after sundown.
-  if ( cur_light_params.sun_angle * RAD_TO_DEG < 95.0 ) {
-      glColor4fv( cur_light_params.scene_diffuse );
-  } else {
-      glColor4f(0.7, 0.2, 0.2, 1.0);
+  if (test()) {
+    int nLayers = _layers.size();
+    for (int i = 0; i < nLayers; i++)
+      _layers[i]->draw();
   }
+}
 
-
-  glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
-  glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
-  glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
-  glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
-  glEnd();
+void
+FGGroupLayer::addLayer (FGInstrumentLayer * layer)
+{
+  _layers.push_back(layer);
 }
 
 
 
 ////////////////////////////////////////////////////////////////////////
-// Implementation of FGWindowLayer.
+// Implementation of FGTexturedLayer.
 ////////////////////////////////////////////////////////////////////////
 
-FGWindowLayer::FGWindowLayer (int w, int h)
-  : FGTexturedLayer (w, h)
-{
-}
 
-FGWindowLayer::FGWindowLayer (const FGCroppedTexture &texture, int w, int h)
-  : FGTexturedLayer(texture, w, h)
+FGTexturedLayer::FGTexturedLayer (const FGCroppedTexture &texture, int w, int h)
+  : FGInstrumentLayer(w, h)
 {
+  setTexture(texture);
 }
 
-FGWindowLayer::~FGWindowLayer ()
+
+FGTexturedLayer::~FGTexturedLayer ()
 {
 }
 
+
 void
-FGWindowLayer::draw ()
+FGTexturedLayer::draw ()
 {
-  // doesn't do anything yet
-  FGTexturedLayer::draw();
+  if (test()) {
+    int w2 = _w / 2;
+    int h2 = _h / 2;
+    
+    transform();
+    glBindTexture(GL_TEXTURE_2D, _texture.getTexture()->getHandle());
+    glBegin(GL_POLYGON);
+    
+				// From Curt: turn on the panel
+				// lights after sundown.
+    if ( cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES < 95.0 ) {
+      glColor4fv( cur_light_params.scene_diffuse );
+    } else {
+      glColor4f(0.7, 0.2, 0.2, 1.0);
+    }
+
+
+    glTexCoord2f(_texture.getMinX(), _texture.getMinY()); glVertex2f(-w2, -h2);
+    glTexCoord2f(_texture.getMaxX(), _texture.getMinY()); glVertex2f(w2, -h2);
+    glTexCoord2f(_texture.getMaxX(), _texture.getMaxY()); glVertex2f(w2, h2);
+    glTexCoord2f(_texture.getMinX(), _texture.getMaxY()); glVertex2f(-w2, h2);
+    glEnd();
+  }
 }
 
 
@@ -660,18 +822,12 @@ FGWindowLayer::draw ()
 // Implementation of FGTextLayer.
 ////////////////////////////////////////////////////////////////////////
 
-FGTextLayer::FGTextLayer (int w, int h, Chunk * chunk1, Chunk * chunk2,
-			  Chunk * chunk3)
+FGTextLayer::FGTextLayer (int w, int h)
   : FGInstrumentLayer(w, h), _pointSize(14.0)
 {
+  _then.stamp();
   _color[0] = _color[1] = _color[2] = 0.0;
   _color[3] = 1.0;
-  if (chunk1)
-    addChunk(chunk1);
-  if (chunk2)
-    addChunk(chunk2);
-  if (chunk3)
-    addChunk(chunk3);
 }
 
 FGTextLayer::~FGTextLayer ()
@@ -686,24 +842,26 @@ FGTextLayer::~FGTextLayer ()
 void
 FGTextLayer::draw ()
 {
-  glPushMatrix();
-  glColor4fv(_color);
-  transform();
-  _renderer.setFont(guiFntHandle);
-  _renderer.setPointSize(_pointSize);
-  _renderer.begin();
-  _renderer.start3f(0, 0, 0);
-
-				// Render each of the chunks.
-  chunk_list::const_iterator it = _chunks.begin();
-  chunk_list::const_iterator last = _chunks.end();
-  for ( ; it != last; it++) {
-    _renderer.puts((char *)((*it)->getValue()));
-  }
+  if (test()) {
+    glPushMatrix();
+    glColor4fv(_color);
+    transform();
+    text_renderer.setFont(guiFntHandle);
+    text_renderer.setPointSize(_pointSize);
+    text_renderer.begin();
+    text_renderer.start3f(0, 0, 0);
+
+    _now.stamp();
+    if (_now - _then > 100000) {
+      recalc_value();
+      _then = _now;
+    }
+    text_renderer.puts((char *)(_value.c_str()));
 
-  _renderer.end();
-  glColor4f(1.0, 1.0, 1.0, 1.0);	// FIXME
-  glPopMatrix();
+    text_renderer.end();
+    glColor4f(1.0, 1.0, 1.0, 1.0);	// FIXME
+    glPopMatrix();
+  }
 }
 
 void
@@ -730,7 +888,19 @@ FGTextLayer::setPointSize (float size)
 void
 FGTextLayer::setFont(fntFont * font)
 {
-  _renderer.setFont(font);
+  text_renderer.setFont(font);
+}
+
+
+void
+FGTextLayer::recalc_value () const
+{
+  _value = "";
+  chunk_list::const_iterator it = _chunks.begin();
+  chunk_list::const_iterator last = _chunks.end();
+  for ( ; it != last; it++) {
+    _value += (*it)->getValue();
+  }
 }
 
 
@@ -747,7 +917,7 @@ FGTextLayer::Chunk::Chunk (const string &text, const string &fmt)
     _fmt = "%s";
 }
 
-FGTextLayer::Chunk::Chunk (ChunkType type, const SGValue * value,
+FGTextLayer::Chunk::Chunk (ChunkType type, const SGPropertyNode * node,
 			   const string &fmt, float mult)
   : _type(type), _fmt(fmt), _mult(mult)
 {
@@ -757,24 +927,28 @@ FGTextLayer::Chunk::Chunk (ChunkType type, const SGValue * value,
     else
       _fmt = "%.2f";
   }
-  _value = value;
+  _node = node;
 }
 
 const char *
 FGTextLayer::Chunk::getValue () const
 {
-  switch (_type) {
-  case TEXT:
-    sprintf(_buf, _fmt.c_str(), _text.c_str());
+  if (test()) {
+    switch (_type) {
+    case TEXT:
+      sprintf(_buf, _fmt.c_str(), _text.c_str());
+      return _buf;
+    case TEXT_VALUE:
+      sprintf(_buf, _fmt.c_str(), _node->getStringValue().c_str());
+      break;
+    case DOUBLE_VALUE:
+      sprintf(_buf, _fmt.c_str(), _node->getFloatValue() * _mult);
+      break;
+    }
     return _buf;
-  case TEXT_VALUE:
-    sprintf(_buf, _fmt.c_str(), _value->getStringValue().c_str());
-    break;
-  case DOUBLE_VALUE:
-    sprintf(_buf, _fmt.c_str(), _value->getFloatValue() * _mult);
-    break;
+  } else {
+    return "";
   }
-  return _buf;
 }
 
 
@@ -783,10 +957,10 @@ FGTextLayer::Chunk::getValue () const
 // Implementation of FGSwitchLayer.
 ////////////////////////////////////////////////////////////////////////
 
-FGSwitchLayer::FGSwitchLayer (int w, int h, const SGValue * value,
+FGSwitchLayer::FGSwitchLayer (int w, int h, const SGPropertyNode * node,
 			      FGInstrumentLayer * layer1,
 			      FGInstrumentLayer * layer2)
-  : FGInstrumentLayer(w, h), _value(value), _layer1(layer1), _layer2(layer2)
+  : FGInstrumentLayer(w, h), _node(node), _layer1(layer1), _layer2(layer2)
 {
 }
 
@@ -799,11 +973,13 @@ FGSwitchLayer::~FGSwitchLayer ()
 void
 FGSwitchLayer::draw ()
 {
-  transform();
-  if (_value->getBoolValue()) {
-    _layer1->draw();
-  } else {
-    _layer2->draw();
+  if (test()) {
+    transform();
+    if (_node->getBoolValue()) {
+      _layer1->draw();
+    } else {
+      _layer2->draw();
+    }
   }
 }